$78+ Cheap flights from Ontario (ONT) to Wisconsin
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MKE
May 3 — May 101
Round-trip
1 adult, Economy
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Cheapest flights from Ontario to WisconsinExplore the most affordable flight options available from Ontario to Wisconsin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2026.
Explore the most affordable flight options available from Ontario to Wisconsin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2026.
This Frontier deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Tue 5/51:10 pm
MSP
- ONT
1 stop8h 01m
Frontier
Deal found 3/31![Frontier logo]()
$160
This Expedia deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Tue 5/121:10 pm
MSP
- ONT
1 stop8h 01m
Frontier
Deal found 3/31![Frontier logo]()
$161
This Booking.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Fri 5/89:39 pm
MSP
- ONT
1 stop14h 26m
Frontier
Deal found 3/30![Frontier logo]()
$162
This Booking.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Thu 5/79:39 pm
MSP
- ONT
1 stop14h 26m
Frontier
Deal found 3/31![Frontier logo]()
$167
This Booking.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Tue 5/129:39 pm
MSP
- ONT
1 stop14h 26m
Frontier
Deal found 4/1![Frontier logo]()
$172
This Frontier deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Mon 4/2011:47 am
MSP
- ONT
1 stop13h 56m
Frontier
Deal found 3/29![Frontier logo]()
$180
This Booking.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1812:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Tue 4/218:15 am
MSP
- ONT
1 stop17h 40m
Frontier
Deal found 3/31![Frontier logo]()
$182
This Frontier deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2212:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Mon 5/41:30 pm
MSP
- ONT
1 stop12h 25m
Frontier
Deal found 3/31![Frontier logo]()
$185
This Frontier deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:00 am
ONT
- MSN
1 stop11h 14m
Frontier
Sat 5/307:59 pm
MSN
- ONT
1 stop5h 50m
Frontier
Deal found 4/1![Frontier logo]()
$185
This Expedia deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2412:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Sun 4/266:45 am
MSP
- ONT
1 stop26h 46m
Frontier
Deal found 3/29![Frontier logo]()
$186
This Booking.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Sun 4/266:45 am
MSP
- ONT
1 stop26h 46m
Frontier
Deal found 3/31![Frontier logo]()
$187
This Frontier deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:00 am
ONT
- MSN
1 stop11h 14m
Frontier
Thu 5/287:59 pm
MSN
- ONT
1 stop5h 50m
Frontier
Deal found 4/1![Frontier logo]()
$205
Best flights from Ontario to WisconsinDiscover carefully curated flight deals from Ontario to Wisconsin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 3, 2026.
Discover carefully curated flight deals from Ontario to Wisconsin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 3, 2026.
This Southwest deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:30 am
ONT
- ORD
2 stops7h 30m
Southwest
Sat 5/94:15 pm
ORD
- ONT
1 stop6h 00m
Southwest
Deal found 4/2![Southwest logo]()
$266
This Delta deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:49 pm
ONT
- MSN
1 stop7h 38m
Delta
Tue 5/59:41 am
MSN
- ONT
2 stops13h 19m
Delta
Deal found 4/2![Delta logo]()
$317
This Frontier deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1812:59 am
ONT
- MSN
1 stop10h 53m
Frontier
Sun 4/262:37 pm
MSN
- ONT
1 stop11h 18m
Frontier
Deal found 4/2![Frontier logo]()
$340
This United Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
ONT
- ORD
Nonstop4h 03m
United Airlines
Wed 5/68:09 pm
ORD
- ONT
Nonstop4h 26m
United Airlines
Deal found 3/30![United Airlines logo]()
$341
This Alaska Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:00 am
ONT
- MSP
1 stop7h 20m
Alaska Airlines
Wed 5/276:54 pm
MSP
- ONT
1 stop7h 02m
Alaska Airlines
Deal found 3/31![Alaska Airlines logo]()
$357
This American Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:59 pm
ONT
- CWA
2 stops11h 44m
American Airlines
Sat 5/92:13 pm
CWA
- ONT
2 stops10h 27m
American Airlines
Deal found 3/30![American Airlines logo]()
$445
This United Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/21:40 pm
ONT
- ORD
1 stop7h 18m
United Airlines
Sat 5/93:00 pm
ORD
- ONT
1 stop7h 36m
United Airlines
Deal found 4/2![United Airlines logo]()
$361
This Delta deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:00 am
ONT
- ORD
2 stops10h 05m
Delta
Mon 5/115:41 pm
ORD
- ONT
2 stops7h 53m
Delta
Deal found 4/1![Delta logo]()
$365
This Southwest deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:55 am
ONT
- MSP
2 stops8h 30m
Southwest
Mon 5/116:10 pm
MSP
- ONT
2 stops6h 55m
Southwest
Deal found 3/31![Southwest logo]()
$391
This Alaska Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
ONT
- MSP
1 stop7h 15m
Alaska Airlines
Fri 5/85:11 pm
MSP
- ONT
1 stop8h 48m
Alaska Airlines
Deal found 3/29![Alaska Airlines logo]()
$412
This Delta deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:49 pm
ONT
- GRB
1 stop8h 12m
Delta
Sat 5/96:20 am
GRB
- ONT
2 stops7h 59m
Delta
Deal found 4/1![Delta logo]()
$412
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
ONT
- ORD
Nonstop4h 03m
United Airlines
Fri 5/88:09 pm
ORD
- ONT
Nonstop4h 26m
United Airlines
Deal found 3/31![United Airlines logo]()
$414
This Alaska Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:59 pm
ONT
- MKE
1 stop16h 44m
Alaska Airlines
Mon 5/117:00 am
MKE
- ONT
1 stop9h 32m
Alaska Airlines
Deal found 3/31![Alaska Airlines logo]()
$450
This KAYAK deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:05 pm
ONT
- MKE
1 stop5h 50m
Southwest
Wed 4/225:30 am
MKE
- ONT
1 stop6h 20m
Southwest
Deal found 3/30![Southwest logo]()
$457
This United Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:18 pm
ONT
- ORD
1 stop8h 01m
United Airlines
Tue 5/268:13 pm
ORD
- ONT
Nonstop4h 33m
United Airlines
Deal found 4/2![United Airlines logo]()
$420
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1410:15 pm
ONT
- GRB
2 stops11h 03m
Delta
Sat 4/185:15 am
GRB
- ONT
1 stop8h 21m
Delta
Deal found 3/30![Delta logo]()
$424
This Alaska Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/97:00 am
ONT
- MSP
1 stop7h 20m
Alaska Airlines
Sat 6/206:17 pm
MSP
- ONT
1 stop7h 34m
Alaska Airlines
Deal found 4/2![Alaska Airlines logo]()
$452
This Southwest deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2212:10 pm
ONT
- ORD
2 stops8h 45m
Southwest
Sat 4/256:15 am
ORD
- ONT
2 stops11h 20m
Southwest
Deal found 4/2![Southwest logo]()
$460
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2110:00 pm
ONT
- MKE
1 stop9h 08m
Delta
Tue 5/266:45 am
MKE
- ONT
1 stop7h 34m
Delta
Deal found 3/30![Delta logo]()
$427
This United Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/11:30 pm
ONT
- ORD
1 stop7h 59m
United Airlines
Mon 5/48:09 pm
ORD
- ONT
Nonstop4h 26m
United Airlines
Deal found 3/29![United Airlines logo]()
$445
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:35 pm
ONT
- LSE
2 stops12h 00m
American Airlines
Thu 4/3010:05 am
LSE
- ONT
2 stops13h 02m
American Airlines
Deal found 3/31![American Airlines logo]()
$595
This Alaska Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:00 am
ONT
- MSP
1 stop7h 15m
Alaska Airlines
Sun 4/267:00 am
MSP
- ONT
1 stop9h 32m
Alaska Airlines
Deal found 3/29![Alaska Airlines logo]()
$455
This Southwest deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:05 pm
ONT
- MKE
1 stop5h 50m
Southwest
Sun 4/266:10 am
MKE
- ONT
2 stops7h 35m
Southwest
Deal found 4/1![Southwest logo]()
$462
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:49 pm
ONT
- GRB
1 stop8h 12m
Delta
Sun 5/35:15 am
GRB
- ONT
1 stop8h 21m
Delta
Deal found 3/30![Delta logo]()
$448
This United Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:10 am
ONT
- MSN
1 stop7h 28m
United Airlines
Sat 5/23:33 pm
MSN
- ONT
1 stop7h 03m
United Airlines
Deal found 4/2![United Airlines logo]()
$455
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1311:59 pm
ONT
- LSE
2 stops9h 23m
American Airlines
Wed 6/1711:52 am
LSE
- ONT
2 stops12h 46m
American Airlines
Deal found 3/31![American Airlines logo]()
$621
This Alaska Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/157:00 am
ONT
- MSP
1 stop6h 58m
Alaska Airlines
Wed 8/265:18 pm
MSP
- ONT
1 stop8h 06m
Alaska Airlines
Deal found 3/29![Alaska Airlines logo]()
$467
This Southwest deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1612:45 pm
ONT
- MSP
2 stops8h 30m
Southwest
Tue 7/216:00 am
MSP
- ONT
2 stops8h 25m
Southwest
Deal found 3/29![Southwest logo]()
$487
This United Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
ONT
- MKE
1 stop7h 42m
United Airlines
Wed 5/62:38 pm
MKE
- ONT
1 stop7h 58m
United Airlines
Deal found 3/29![United Airlines logo]()
$457
This Delta deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:55 pm
ONT
- MSN
2 stops12h 25m
Delta
Thu 9/247:00 am
MSN
- ONT
2 stops13h 01m
Delta
Deal found 3/29![Delta logo]()
$460
Last-minute flights from Ontario to WisconsinDiscover last-minute flight deals from Ontario to Wisconsin. Data last updated April 3, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Wisconsin. Data last updated April 3, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Mon 4/2011:47 am
MSP
- ONT
1 stop13h 56m
Frontier
Deal found 3/29![Frontier logo]()
$180
This Booking.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Sun 4/266:45 am
MSP
- ONT
1 stop26h 46m
Frontier
Deal found 3/31![Frontier logo]()
$187
This Booking.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1812:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Tue 4/218:15 am
MSP
- ONT
1 stop17h 40m
Frontier
Deal found 3/31![Frontier logo]()
$182
This Frontier deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2212:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Mon 5/41:30 pm
MSP
- ONT
1 stop12h 25m
Frontier
Deal found 3/31![Frontier logo]()
$185
This Expedia deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2412:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Sun 4/266:45 am
MSP
- ONT
1 stop26h 46m
Frontier
Deal found 3/29![Frontier logo]()
$186
This Frontier deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Tue 5/51:10 pm
MSP
- ONT
1 stop8h 01m
Frontier
Deal found 3/31![Frontier logo]()
$160
This Booking.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Thu 5/79:39 pm
MSP
- ONT
1 stop14h 26m
Frontier
Deal found 3/31![Frontier logo]()
$167
This CheapOair deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Sun 5/36:45 am
MSP
- ONT
1 stop26h 46m
Frontier
Deal found 3/31![Frontier logo]()
$171
This Booking.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Fri 5/89:39 pm
MSP
- ONT
1 stop14h 26m
Frontier
Deal found 3/30![Frontier logo]()
$162
This Expedia deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Tue 5/121:10 pm
MSP
- ONT
1 stop8h 01m
Frontier
Deal found 3/31![Frontier logo]()
$161
This Booking.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Tue 5/129:39 pm
MSP
- ONT
1 stop14h 26m
Frontier
Deal found 4/1![Frontier logo]()
$172
This Frontier deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:00 am
ONT
- MSN
1 stop11h 14m
Frontier
Sat 5/307:59 pm
MSN
- ONT
1 stop5h 50m
Frontier
Deal found 4/1![Frontier logo]()
$185
One-way flights from Ontario to WisconsinSearch for one-way flight options from Ontario to Wisconsin. Find affordable one-way fares based on user searches. Data last updated April 3, 2026.
Search for one-way flight options from Ontario to Wisconsin. Find affordable one-way fares based on user searches. Data last updated April 3, 2026.
This Trip.com deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/910:50 am
ONT
- MSP
1 stop7h 54m
Frontier
Deal found 4/3![Frontier logo]()
$78
This Super.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Deal found 3/31![Frontier logo]()
$79
This Super.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:44 pm
ONT
- ORD
1 stop8h 24m
Frontier
Deal found 3/31![Frontier logo]()
$79
This Frontier deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Deal found 3/31![Frontier logo]()
$80
This CheapOair deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:44 pm
ONT
- ORD
1 stop8h 24m
Frontier
Deal found 3/31![Frontier logo]()
$80
This Super.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Deal found 3/30![Frontier logo]()
$85
This Super.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/68:06 pm
ONT
- ORD
1 stop24h 55m
Frontier
Deal found 3/29![Frontier logo]()
$85
This Booking.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Deal found 4/1![Frontier logo]()
$86
This CheapOair deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:26 am
ONT
- ORD
1 stop28h 51m
Frontier
Deal found 3/31![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:44 pm
ONT
- ORD
2 stops12h 39m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:00 am
ONT
- ORD
1 stop12h 37m
Frontier
Deal found 3/31![Frontier logo]()
$88
This Trip.com deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:33 pm
ONT
- MKE
1 stop22h 01m
Frontier
Deal found 4/2![Frontier logo]()
$89
Find flight deals from Ontario to Wisconsin
Keep the following information in mind while searching for Ontario to Wisconsin flight deals. Data was last updated April 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $160 (CheapOair) |
One-way from | $78 (Trip.com) |
Popular in | February |
Cheapest in | August |
Average price | $400 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Wisconsin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 3, 2026.
Use the filters below to find and compare flights from Ontario to Wisconsin that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioChicago
ONT - ORD
ONTORD
Ontario
Thu 5/7
5:30 am-3:00 pm
2 stops7h 30m
Chicago O'Hare Intl
Sat 5/9
4:15 pm-8:15 pm
1 stop6h 00m
$266
OntarioMadison
ONT - MSN
ONTMSN
Ontario
Fri 5/1
12:49 pm-10:27 pm
1 stop7h 38m
Madison Truax Field
Tue 5/5
9:41 am-9:00 pm
2 stops13h 19m
$317
OntarioMadison
ONT - MSN
ONTMSN
Ontario
Sat 4/18
12:59 am-1:52 pm
1 stop10h 53m
Madison Truax Field
Sun 4/26
2:37 pm-11:55 pm
1 stop11h 18m
$340
Quickest round-trip
OntarioChicago
ONT - ORD
ONTORD
Ontario
Tue 5/5
7:00 am-1:03 pm
Nonstop4h 03m
Chicago O'Hare Intl
Wed 5/6
8:09 pm-10:35 pm
Nonstop4h 26m
$341
OntarioMinneapolis
ONT - MSP
ONTMSP
Ontario
Wed 5/20
7:00 am-4:20 pm
1 stop7h 20m
Minneapolis St Paul
Wed 5/27
6:54 pm-11:56 pm
1 stop7h 02m
$357
OntarioChicago
ONT - ORD
ONTORD
Ontario
Sat 5/2
1:40 pm-10:58 pm
1 stop7h 18m
Chicago O'Hare Intl
Sat 5/9
3:00 pm-8:36 pm
1 stop7h 36m
$361
OntarioChicago
ONT - ORD
ONTORD
Ontario
Fri 5/8
6:00 am-6:05 pm
2 stops10h 05m
Chicago O'Hare Intl
Mon 5/11
5:41 pm-11:34 pm
2 stops7h 53m
$365
OntarioMinneapolis
ONT - MSP
ONTMSP
Ontario
Tue 5/5
10:55 am-9:25 pm
2 stops8h 30m
Minneapolis St Paul
Mon 5/11
6:10 pm-11:05 pm
2 stops6h 55m
$391
OntarioMinneapolis
ONT - MSP
ONTMSP
Ontario
Tue 5/5
7:00 am-4:15 pm
1 stop7h 15m
Minneapolis St Paul
Fri 5/8
5:11 pm-11:59 pm
1 stop8h 48m
$412
OntarioGreen Bay
ONT - GRB
ONTGRB
Ontario
Thu 4/30
12:49 pm-11:01 pm
1 stop8h 12m
Green Bay Austin-Straubel
Sat 5/9
6:20 am-12:19 pm
2 stops7h 59m
$412
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Wisconsin
Have a flexible travel schedule? Discover the best time to fly to Wisconsin from Ontario with our price prediction graph.
ONT-ORD
ONT-MSN
ONT-MKE
ONT-MSP
ONT-GRB
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Wisconsin
ONT-USWI
ONT-ORD
ONT-MSN
ONT-MKE
ONT-MSP
What is the cheapest month to book a flight from Ontario to Wisconsin?
Currently, May is the cheapest month in which you can book a flight from Ontario to Wisconsin (average of $96). Flying from Ontario to Wisconsin in January is currently the most expensive (average of $265). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Ontario to Wisconsin?
Reviews of airlines servicing Wisconsin
Get insights into the airlines that provide service to Wisconsin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Wisconsin. Reviews last updated April 3, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Ontario to Wisconsin. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Wisconsin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to Wisconsin
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Wisconsin by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Wisconsin by cabin class
Find flights from Ontario to Wisconsin, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Wisconsin flights
Browse other Ontario and Wisconsin flight options. Last updated on April 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Wisconsin flights
Consider these flights traveling from Ontario to Wisconsin.
Top 4 airlines flying from Ontario to Wisconsin
Discover the top 4 airlines that operate flights from Ontario to Wisconsin. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$253 | Average$452 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$276 | Average$599 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$309 | Average$506 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$326 | Average$416 | FlexibilityNo cancel fee | On-time63% |